eliminate heap buffer overflow vulnerability, thanks to ZhangJiaxing (@…

…R0fM1a) from Codesafe Team of Legendsec at Qi'anxin Group
ImageMagick · May 27, 2021 · b307bca · b307bca
1 parent 2f1c004
commit b307bca
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/coders/tiff.c b/coders/tiff.c
@@ -1790,7 +1790,7 @@ static Image *ReadTIFFImage(const ImageInfo *image_info,
         /*
           Convert stripped TIFF image.
         */
-        extent=2*TIFFStripSize(tiff);
+        extent=4*TIFFStripSize(tiff);
 #if defined(TIFF_VERSION_BIG)
         extent+=image->columns*sizeof(uint64);
 #else